It's entirely possible that Superman's fought Doomsday since that episode. There's been a thousand years between Argo and the Season 8 Finale.
This is what I'm having a bit of a boggle with here, and it's a common problem with many time-travel stories that dislodge someone from the present and drop them into the future. Let's look at this logically for a moment:
If the ring took Clark and Booster out of the timeline and transported them a thousand years into the future, then Clark was removed from the timeline
at that point and essentially
skipped over a millenium. Hence, there couldn't have been any more Superman from that point because
he wasn't there.
So how could he have had another encounter with Doomsday after the first one in this future, if he didn't live through those years? The future he and Booster have been taken to has to be a parallel one to the one where Clark remained in the timeline and lived on to have a multitude of heroic adventures.
Yeah I know, you two guys are probably thinking 'It's just a comic, Proc, don't over-think it'. And you're probably right, but as I say, this is a common contrivance of time-travel stories and it really bugs the shit out of me.
OK, now that I've gotten that out of my system, I decided to go back and re-read the whole Argo arc, because I've been having a hard time remembering what happened in which issue and keeping the events straight in my head. Plus, since I didn't really remember Booster all that well, I pulled out the Season 10 DVD and watched the ep he was in, which certainly helped quite a bit.
One thing I had forgotten until I watched it was how incredibly annoying Cat Grant is/was. That squeaky-whiny voice! My ears! Stop the pain!!
OK, I'll get off my soapbox... For now.
