Not necessarily stronger, the thread's "head line" was mostly to attract attention. The point of my thread that Oden is at the very least was equal to Whitbeard because what he said and because of narrative that Oda has been pushing so far. Same can be said about Kaido, yes, I shit all over Kaido a lot but I never doubted his strength, I'm pretty sure sooner or later he will deliver in terms strength.
The key point of this thread is very simple, Roger and Whitbeard were mostly hyped as legends, as pairets who achieved more than others but no point in the story it hypes their "fighting strength" directly. On the other hand we have Kaido and Oden, both aren't legends like Roger or Whitbeard but they are the only ones whose fighting strength was directly hyped. No other top tier, from all Emperors to all Admirals, was hyped as much as Oden and Kaido.
Yes, other top tiers have been hyped too but their hype was indirect, not necessarily about their fighting power, it was mostly ether about their achievements or their status or position, but nothing directly about "fighting strength" not the way Kaido and Oden were hyped.
"Land, sea, air out of all living things this pairet is known as the strongest critur alive", "no one can kill this man even he himself"
"Oden a man who knew no enemy of his caliber" "Oden is the only one who was able to scar Kaido dispite numerous battles Kaido has been through"
YOU CAN'T BE MORE CLEAR THAN THIS.
