I wouldn't be surprised about the graphics performance vs tegra 3. Before anyone bashing me for being a Fanboy - I am all the way android, but I do have respect where respect is due (and Apple as a company has no respect due). But anyway, I remember seeing benchmarks where the Tegra 3 was only slightly better than the iPad2 in some respects. So I'm actually willing to bet that A5X quad core will benchmark quite a bit better than Tegra 3.
Now that's hardware to hardware comparison. On a whole, I'm still waiting for that perfect Tegra 3 tablet. I'd like an 8ish", Tegra 3, 16gb onboard with SD Reader for expansion and HDMI out. Is that too much to ask? I feel like all those 7"ers are just a bit too small for me, and I don't want to lug around a 10+". The perfect size for me is the Galaxy Tab 8.9, but it's not Tegra 3, and it doesn't have an SD Card reader (even though the 7" Galaxy Tab Does come with an SD Card reader - what's that all about?).
But I digress.