I really don't think it's a logical argument to justify misdeeds by saying they're no worse than other misdeeds.
I don't know what common thread you are thinking of for those other Presidents you mentioned, but I don't think any of them invaded another country with less reason than Bush did in Iraq. The fact that he obviously lied to the American people in order to justify the war is repugnant. You could probably make the case that some on your list up there lied to go to war. But if you did, it wouldn't justify Bush's misdeeds.
The Vietnam War is probably the best comparison you could make. Do you think Bush is not so bad, because, "heck we attacked Vietnam!" Johnson decided not to run for a second term because of his misdeeds in SE Asia. Nixon was impeached. I'd settle for either of those solutions to the current problem. I would say, "I'd settle for the JFK solution" too, but, of course, I won't, because that would be stupid.
By the way, though the Iraq war is my biggest beef with GWB, I also really do not like his economic (tax cuts in times of nearly unprecedented budget deficit) or environmental (speaks for itself) policies.
Bush is selling our soldiers, our country's prestige in the world, and our children's and grandchildren's economic and environmental health to the most convenient bidders. He sucks. He should be impreached, but I'll settle for him getting voted out of office.