Yeah, TSB should be the all-time best. How could it not be?
Absolute best head-to-head sports game ever. And if they could have made it a 4-player game it would have been the best sports party game ever.
Another aspect that makes it so good is the simple controls and ease to learn. You could take someone that's never played before and they'd know what they were doing by the end of the 1st half.
And if you had no one to play with it had endless replayability with all the stats it kept. TSB III is actually one I love to play with trading, free agency, stats stats and more stats, unlocking the all-time greats (HOFers), and some bizarre glitches. I've got one cart that I abused that you can only play the Pro Bowl on and every single player is Scott Zolak. No lie.
To keep TSB challenging I play some seasons as defense only. As soon as I take possession I must punt or kick a field goal with no onsides kicks and no kick/punt returns. Very challenging and you rack up some crazy defensive stats.
The tecmos are also some of the most infuriating games and many a controller has felt my wrath. TSBIII unfortunately incorporates random spin moves and wayyyy over accentuates the rushing power stat.
A great Tecmo community is at http://www.knobbe.org
The simplicity factor is what makes Ken Griffey Jr Presents MLB for SNES so great. People who are expecting a baseball simulator are rightfully disappointed. You have to get into the game's quirks and realize you're in a whole other dimension where Sid Bream steals bases more easily than Rickey Henderson and the most common out is the soft line drive.
I remember when it came out my buddy and I would "research" through our baseball cards to find out who the lesser known players were. The game doesn't have the real players names, but has their stats and abilities - with a name editor you can change it. Now it's as simple as going to the 1993 rosters at baseball-reference.com.
I still play it to this day. To make it more challenging I use mostly bench players.
“Most men lead lives of quiet desperation and go to the grave with the song still in them.” --Henry David Thoreau