AmirPatriot,
Hey, if I've got the time, I can do some serious internet-mining.
UPDATE:
Vevak's claim is specifically about the 2003 Iraq War and I found nothing concerning their performance against Iraqi armor. I suspect this is due to the simple fact that overall, there were no major clashes of US and Iraqi armor during that conflict. There were sporadic engagements but nothing like the major armor battles in the 1991 Gulf War (credit where it's due, the Iraqis certainly tried to stop US armor, but were clobbered). Most of the information I found about Bradley performance during the 2003 conflict was about the aftermath, aka their performance during the insurgency. A large number of Bradleys were taken out by IEDs and their losses helped usher in the greater use of MRAPs.
On the other hand, I did find some evidence of high kills of Bradleys vs Iraqi tanks during the 1991 Gulf War. Again, I couldn't find any "total kills" but I was able to find stats for one specific unit that used Bradleys, the 2nd Cavalry Regiment. This unit claims 159 Iraqi tank kills by the end of the conflict, a 1/3 of which likely achieved during the Battle of 73 Easting (in which they fought alongside M1 Abrams). There are also several somewhat vague claims of of the Bradleys out-doing the Abrams in tank kills during the 1991 conflict (Global Security.com and a site called "Tank Nut Dave") but neither have specific numbers and are vaguely worded.
For example:
Global Security.org claims that in the 1991 Gulf War, the Bradleys took out more Iraqi ARMORED VEHICLES than the Abrams did. Problem is, "armored vehicles" would mean kills against APCs, IFVs, and tanks.
Then, someone linked that GS page on the Bradley's Wikipedia page, but reworded it to specifically claim the Bradleys killed more Iraqi tanks than the Abrams.
Conclusion: I suspect this talk of Bradleys achieving more tank kills comes from the 1991 Gulf War, and could very well be true but I can't find any official Army sources/reports/references to state that, let alone provide stats to back it up. The only sources of this claim seems to be vague statements on third-party websites.
Let me be clear though, I'm not discounting the idea of ATGM-equiped IFVs being useful, far from it. Such vehicles are real "force-multipliers", capable of dishing out a lot of pain from a single, small(ish) package. The Bradleys are effectively both traditional IFVs (capable of carrying troops and able to support them against various light-armor threats) and tank-destroyers. A single Bradley could dismount 6-7 soldiers, engage & take out other APC/IFV with their 25mm cannon, and engage main battle tanks with a twin TOW launcher (with 7 rounds on board).
In fact, the Soviets didn't have a real equivalent to this kind of force multiplication until the development of the BMP-3, which while a very different design, has many of the same capabilities (dismounting troops, taking on light armor using the coaxil 30mm cannon and engaging heavier armor with the 9M117 Bastion missile and their 100mm cannon).