Sam, you wrote: “I have heard some fairly big (no one huge though) Rabbonim say…”
When others write that someone is or isn’t a godol or say Rov A is a greater rov than Rov B, you on more than one occasion jumped in and effectively said ‘how dare you rate rabbonim’, etc.
Yet, here you yourself rate rabbonim… some are “fairly big” but not “huge”, while others are “huge” rabbonim. Now you can understand looking at rabbonim comparability is not only okay but actually necessary. (As you yourself just did.)