Apocalypse is a non-factor here, imo. Still Sentry vs Ion is a hard fight to judge. The Sentry has some really impressive feats against cosmic characters and Sadam hasn't been that impressive as Ion, imo (Still don't know how he didn't curbstomp Superboy Prime). But then you have to add in all the feats Kyle Rayner did as Ion and which Sadam should also be capable of. I'm honestly torn here.
I wish they kept Sadam around longer.
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Carl - "No, the real point is: I don't give a damn."
Carl - "This line, here? Line of Death. You cross it, and your freedoms no longer exist. Um-kay? Have a good day."
All that could change of course when Marvel actually decides to establish WHAT Sentry is and what are his power levels once and for all (relatively speaking)
The mere fact that Sodam's one on one fight with Prime lasted more than a page puts him above Sentry IMO.
And on implied power he stomps.
Sentry should be able to beat Apocalypse unless Apoc messes with his mind (which is very likely).
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“Where the longleaf pines are whispering
to him who loved them so.
Where the faint murmurs now dwindling
echo o’er tide and shore."
-A Grave Epitaph in Santa Rosa County, Florida; I wish I could remember the man's name.
I'm not sure messing with Bob's mind is a winning strategy. At best you make him sane long enough for him to realize he doesn't want to fight and BFRs himself. In which case you have to then deal with the Void who always shows up to "do what Bob can't" (ala Secret Invasion).
I agree that Sadam is more versatile and might have more implied power (then again I think the Sentry have been refereed to as almost omnipotent - for whatever that's worth), but the Sentry is an odd character. He manhandels Heralds and apparently can't die, but his upper limit hasn't been clearly established yet.
__________________
Carl - "No, the real point is: I don't give a damn."
Carl - "This line, here? Line of Death. You cross it, and your freedoms no longer exist. Um-kay? Have a good day."