I feel bad for Android tablet manufacturers. The "killer" Tegra 3 looks to be headed the same way as the Tegra 2: Death at the hands of the next A# series chipset. The Tegra 3 is about 2.08% faster than the Apple A5 in processing power tests. The T3 is about 2.38X slower than the A5 in the GLBenchmark Texture Fetch test. The T3 is about 24% faster than the A5 in the GLBenchmark Egypt test. All of which is slightly depressing, because iOS needs much less processing power than Android (I've tried a Galaxy Nexus - ICS STILL lags). I can't wait to see what the A6 will bring, but it will undoubtably crush the Tegra 3 as the A5 crushed the Tegra 2.
Just going to point out the lag is due to how the os handles ui elements. Apple puts it at real time requirement which means other task get paused while the gui is being used. Android works like a desktop OS and that is that it is only at normal priority.
Long term the choice will be a non issue as tablets get more powerful it not going to matter and honestly will work out to be a better choice.