Snapdragon is dual issue superscalar, just like A8, and it has a VFP unit that implements NEON instruction set. Furthermore snapdragons VFP processes 128 bits of data in parallel, while A8's only does 64 bits, and snapdragons VFP is pipelined.
All this comes out to snapdragon doing about the same as A8 per Hz.
And there are, of course, snapdragon variants with a 3D accelerator. And with a DSP.
About power consumption - there is no reason to assume that A8 is more efficient than snapdragon, rather the opposite. Comparison of N900 and N1 battery times certainly does not lend any credence to such claims.
About snapdragon limiting you to 10 applications in parallel - that certainly wins the "most inane statement in this thread" award, which is quite an achievement. I guess that OMAP limits you to one ringtone per phone, instead of one ringtone per contact, as every other phone has for the last ten years.
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