The two formats test different skills. In the best-of-7 format, you bowl one opponent on one pair of lanes. You need to be able to follow your own transition, avoid the other guy's transition, while giving them as much grief with transition as possible. Absolute score doesn't matter so long as you beat the other guy. You can spend time finding a new line if the game is decided since total pins don't matter in the short run (in the long run, they still use average and record to determine the standings for the losers in a round). For the players, you only have to beat two or three guys to get to the show or the final round instead of 16, 24, or 32.
For the round robin, total pins is important, so bowling your best every game is critical whether you're losing or not. You can lose all your matches and average 250+ to still make the show. In a real sense, that's not really fair to the guy who average 220 but won the majority of his matches (thus averaging 245 or so with bonus pins). You also don't have the opportunity to create a shot for yourself and you can't use a bad game to line up for the next game because you'll be on a different pair following a different couple of guys who broke the lanes down an entirely different way.
What's more fair? Being able to take home the trophy by beating only five different bowlers, even if your average wasn't the highest? Or losing most of your matches but with a high average to be the top seed, then only beating one guy to take home the trophy? Winning most of your matches with a low average to not make the show?
There's a different kind of tension and drama for each format. As a spectator, the best-of-7 is probably the best, there's much more one-on-one competition and you can get much more involved in individual pairings. The longer round-robin format is more of a random-opponent grind. For the show, it certainly is exciting watching a guy climb the ladder, but that doesn't happen in most shows. Most only win one or two matches.
I really wish they'd bring back the old Strikepass where you could watch the best-of-7 match play on Thursday or Friday.
SH