Strong disagree. He said that he wasn't confident in bearing current Blackbeard in his old age, admitting that were he in his prime, he felt confident that he would beat Blackbeard.
It basically confirms that Prime Rayleigh > current Blackbeard.
And even in terms of portrayal alone, this is far better portrayal than Old Garp and Sengoku combined:
Which is the part you disagree with? I never argued for prime Rayleigh vs current Blackbeard.
Just about old Ray vs current BB, which old Ray admitted he wouldn't win.
Had BB didn't retreat like Jack in Zou, old Ray would be died here.
As for prime Ray vs current BB, I am not 100% sure prime Ray would win. "He thinks he can win" doesn't really convince me, after multiple scenarios like "Ace thinks he can revenge Thatch", or "Doffy thinks Vergo would beat Law's ass", or Big Mom thinks she wouldn't lose to Kidd and Law" or "King thinks he wouldn't lose to Zoro" etc.
Result can be different than someone's thinking.