Power consumption is much worse for Bulldozer
Even if it were true that Bulldozer was as fast as Ivy Bridge, why would anyone get an FX8120/8150, overclock it to 4.6-4.8ghz, just to put up with 319-340W of extra power consumption at load over
a 5.0ghz 3570K or 4.8-4.9ghz 3770K?
Gaming performance with multiple fast GPUs is much worse with Bulldozer
However, we know Bulldozer is not even as fast. AMD's CPU may be fine for the majority of games when paired with a mid-range GPU such as HD7870, but start adding HD7970 or 2 of those and the bottleneck appears:
Limited longevity, imminent CPU bottlenecking is much more likely with Bulldozer in the future
Further, even if you have 1 mid-range GPU where FX4100 or something similar is adequate, sooner or later you'll upgrade your GPU to something faster and you'll be CPU limited. Suddenly, you'll have to buy a new motherboard, new CPU and upgrade in 2 years. So much for saving $70-80 over Intel's superior CPU. How much $ did people waste going form Phenom II to Bulldozer? Ironically that Core i5 750/760 @ 3.8ghz+ or i7 860 @ 3.8ghz+ from 2009 still mop the floor with FX series in games. So again, Intel was the smarter and cheaper option all this time; just as it continues to be that way with IVB.
People who buy high-end GPUs don't really buy $100-120 budget CPUs. The $80-90 savings for say an FX4100 isn't worth it over a $212 3570K
Most importantly, we can keep our CPU for 3-4 years now and upgrade GPUs 2-3x in that timeframe. 2500k @ 4.5ghz or 3570K @ 4.5ghz will last another 3-4 years while FX8150 is already bottlenecking GTX680/HD7970 OC in some games (Civilization V, SKYRIM, Starcraft II, etc.).
Why Bulldozer currently doesn't make sense
Why bother buying a processor that doesn't even cost less and consumes a lot more power but at best offers similar performance and in some cases far worse performance? Also, for guys like us who spend $400-600 on GPU hardware, it simply makes no sense to buy something crappy like a $120 FX4100. Might as well spend $90 more and get the real deal - 2500k/3570K. Over the course of 3-4 years of CPU ownership, that $90 savings is just $25-30 a year....
Seriously, do you work for AMD? It's perfectly fine to purchase AMD's CPUs if you are a fan of AMD, but there is no question they are inferior in performance/watt, or gaming performance, or overclocking performance. You seem to be defending Bulldozer line-up of chips every time it's put in bad light, which ironically is the truth. Accusing Xbitlabs of being biased against AMD is laughable since they have praised Athlon XP+, Athlon 64 and Athlon X2. You can just search for older reviews.
Even AMD advises reviewers to test their HD7950/7970 cards with Intel's CPUs......