Ok, wiki agrees with the whole 2-3,000 man strength as does Bagnall. Referencing the source, it appears that 3,000 native Carthaginians were at this battle, but the Carthaginian force was 10,000 strong due to 7,000 or so mercs marching with the Sacred Band. (Interestingly, this also mentions that Carthage used 4 horse chariots long ago).
http://penelope.uchicago.edu/Thayer/...imoleon*.html:
while the regions below cleared up, the Crimesus came into view, and the enemy were seen crossing it,
in the van their four-horse chariots formidably arrayed for battle, and behind these ten thousand men-at‑arms with white shields. 5 These the Corinthians conjectured to be Carthaginians, from the splendour of their armour and the slowness p327and good order of their march. 6 After these the other nations streamed on and were making the crossing in tumultuous confusion.
After these the other nations streamed on and were making the crossing in tumultuous confusion. Then Timoleon, noticing that the river was putting it in their power to cut off and engage with whatever numbers of the enemy they themselves desired, and bidding the soldiers observe that the phalanx of the enemy was sundered by the river, since some of them had already crossed, while others were about to do so, ordered Demaretus to take the horsemen and fall upon the Carthaginians and throw their ranks into confusion before their array was yet formed. 7 Then he himself, descending into the plain, assigned the wings to the other Sicilian Greeks, uniting a few of his mercenaries with each wing, while he took the Syracusans and the best fighters among his mercenaries under his own command in the centre. 8 Then he waited a little while, watching what his horsemen would do, and when he saw that they were unable to come to close quarters with the Carthaginians on account of the chariots which coursed up and down in front of their lines, but were forced to wheel about continually that their ranks might not be broken, and to make their charges in quick succession after facing about again, 9 he took up his shield and shouted to his infantrymen to follow and be of good courage; and his voice seemed stronger than usual and more than human, whether it was from emotion that he made it so loud, in view of the struggle and the enthusiasm which it inspired, or whether, as most felt at the time, some deity joined in his utterance. 10 Then, his men re-echoing his shout, and begging him to lead them on without delay, he signalled to p329his horsemen to ride along outside and past the line of chariots and attack the enemy on the flank, while he himself made his vanguard lock their shields in close array, ordered the trumpet to sound the charge, and fell upon the Carthaginians.
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But these withstood his first onset sturdily, and owing to the iron breastplates and bronze helmets with which their persons were protected, and the great shields which they held in front of them, repelled the spear thrusts. 2 But when the struggle came to swords and the work required skill no less than strength, suddenly, from the hills, fearful peals of thunder crashed down, and vivid flashes of lightning darted forth with them. 3 Then the darkness hovering over the hills and mountain summits came down to the field of battle, mingled with rain, wind, and hail. It enveloped the Greeks from behind and smote their backs, but it smote the Barbarians in the face and dazzled their eyes, a tempest of rain and continuous flames dashing from the clouds. 4 In all this there was much that gave distress, and most of all to the inexperienced; and particularly, as it would seem, the peals of thunder worked harm, and the clatter of the armour smitten by the dashing rain and hail, which made it impossible to hear the commands of the leaders. 5
Besides, since the Carthaginians were not lightly equipped, but, as I have said, encased in armour, both the mud and the bosoms of their tunics filled with water impeded them, so that they were unwieldy and ineffective in their fighting, and easily upset by the Greeks, 6 and when they had once fallen it was impossible for them to rise again from p331the mud with their weapons. 7 For the Crimesus, having been already greatly swollen by the rains, was forced over its banks by those who were crossing it, and the adjacent plain, into which many glens and ravines opened from the hills, was filled with streams that hurried along no fixed channels, and in these the Carthaginians wallowed about and were hard beset. 8 Finally, the storm still assailing them, and the Greeks having overthrown their first rank of four hundred men, the main body was put to flight. 9 Many were overtaken in the plain and cut to pieces, and many the river dashed upon and carried away to destruction as they encountered those who were still trying to cross, but most of them the light-armed Greeks ran upon and despatched as they were making for the hills. 10
At any rate, it is said that among ten thousand dead bodies, three thousand were those of Carthaginians — a great affliction for the city. 11 For no others were superior to these in birth or wealth or reputation, nor is it recorded that so many native Carthaginians ever perished in a single battle before, but they used Libyans for the most part and Iberians and Numidians for their battles, and thus sustained their defeats at the cost of other nations.