Bledsoe has had a few good seasons mixed in with a bunch of mediocre ones.
Aaron and other players had great seasons, just not seasons that matched the unbelievable run the Babe had in the 1920s. And it was 4,000 at bats, not 6,000 more than Ruth. But Ruth aside, Aaron put up remarkable numbers. Other than pass attempts and games played, you can't say that about Bledsoe. And no, frankly I give no weight whatsoever to what Bonds has done, especially in the last 5 years.
Put it in this context: Vinny Testaverde missed most of the '99 season with injury and played only a little in 2002 and 2003. If he had played those season fully and had mediocre or even bad numbers, say 3,000 yds each season, he would have approximately 7,000 more yards and 30 or 40 TDs.....and he'd be #2 alltime in passing yards (well over 50,000) and probably 3rd in TDs. Is Vinny a great QB? No, not even close. But by the 50,000 yard standard, he is.