I didn't downvote, but I fully understand if anyone would. Your comment shows some serious lack of understanding of the complexity of software like photoshop and the complexity of porting software. We may believe that's what your friend told you, but we have troubles believing he really did that. Maybe exaggerated (a lot)?
I assume by ported they mean compiled the C++ code to asm.js, now that as an Adobe employee they had access to the source code. Though this would still be a significant effort to get working.
> Your comment shows some serious lack of understanding of the complexity of software like photoshop and the complexity of porting software.
No.
He had access to the source code as an Adobe employee, he's a well known low level JS engineer (hence making Phonegap) and there are LLVM to asm.js webassembly compilers.
