You must have missed the memo. There is a replacement for displacement, it’s called forced induction.
The 3.5 eco boost V6 raptor puts down more power than the old 6.2 V8.
What are you using for power ratings? HP, torque or just guessing... No references = No facts! Show me the curves...
Force induce my V8 or V10 for +60K and then we are on the same playing field (and I might be interested...)