Higher end mobile processors could but it is a big jump in computational load, not just because of the increased processing power of the PS3, but also because it is quite architecturally different from traditional x86 CPUs.
This is why it’s kind of amazing how efficient RPCS3 is.
I believe RCPS3 uses a translation layer in order to achieve its accuracy, so I think porting it would be relatively easy. Then again, the last words of any programer are that something should be relatively easy.