Yes Xbox original were stronger than PS2, as it launched several years later.
PS3 is stronger than X360 no question, show by single party titles and by late gen multiplatforms.
PS4 is stronger than X1. X1X came much later and didn't affect the landscape at all. So if you want to have math PS4 stayed stronger than X1 for much longer than X1X is stronger than PS4Pro (and that also costed a year more to launch, higher price tag and lower sales).
duduspace11 "Well, since we are estimating costs, Pokemon Red/Blue did cost Nintendo about $50m to make back in 1996"
Mr Puggsly: "Hehe, I said good profit. You said big profit. Frankly, not losing money is what I meant by good. Don't get hung up on semantics"