Don't mean to be offensive, but that is pretty feeble. The Carthaginians were a Phoenician, or Canaanite, culture. The literature from the Hebrews, not associated at all with the Greeks or Romans, also insists that these people sacrificed their children. That's three independent witnesses, so to speak?
IMNSHO, the burden of proof lies with the naysayers, not the deniers. Next they 'll be telling us there was no evidence of cannibalism among indigenous American peoples.
A common PC view during the last decades of the 20th. Lots of claims were made that European observers invented the cannibalism to justify and legalize their attacks on the Indians.
This POV seems to have fallen somewhat out of favor recently.
It would seem that some experts agree with me, give or take a little....a quick look at Wikipedia....
http://en.wikipedia.org/wiki/Child_sacrifice#cite_note-plosone.org-13
“The accuracy of such stories is disputed by some modern historians and archaeologists. At Carthage, a large cemetery exists that combines the bodies of both very young children and small animals, and those who argue in favor of child sacrifice have argued that if the animals were sacrificed then so too were the children. However, recent archaeological work has produced a detailed breakdown of the age of the buried children and based on this, and especially on the presence of pre natal individuals - that is still births, it is also argued that this site is consistent with the burial of children who had died from natural causes in a society that had a high infant mortality rate - as Carthage is assumed to have been. I.e. this data supports the view that Tophets were cemeteries for those who died shortly before or after birth, regardless of the cause.”
From the article...”Skeletal Remains from Punic Carthage Do Not Support Systematic Sacrifice of Infants”
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0009177
Wikipedia also states..
“Phoenician sacrifice has been debunked as nothing more than a myth....”
....which refers to the article (synopsis, really) “Still Born Fetuses in Urns & the Perpetuated Lie of Diodoro Siculo” which states...
“....the greater part of approximately 6,000 children urns found in Carthage, contain bones of fetuses, therefore of still born babies.”
http://phoenicia.org/childsacrifice.html
I am not an archaeologist, but one thing that I definitely believe about the subject is that there is a very great deal that they are not really sure of....