A huge part of Bitcoin's success is thanks to PoW.
OP can't see the forest for the trees.
OP should fork Bitcoin to proof-of-whatever and let it compete with Bitcoin. Someone, for the love of all things holy, please fork Bitcoin to proof-of-whatever and release it so we can put these endless debates to bed.
No, Bitcoin's success is thanks to its early start, to Satoshi's innovation and to the efforts of the community. PoW had very little to do with it. If Bitcoin had used PoS from the start, it would probably be more successful, and we might already be seeing $5000 per coin today.
We could both make unsubstantiated claims all day long. Just fork the code and let them compete. I fully support forking Bitcoin to PoX.