Actually it was Flippinbaits that said that, and as my former partner he knows I don't completely buy into that. True larger fish do tend to want a meal that will be worth their effort, however larger(older/smarter) bass also know the size of the baitfish they are chasing are and if your lure is too big to be a real baitfish they may not chase your unnatural looking lure.
Here is a simple example from last year. Flippinbaits was even with me on this trip and he should remember the trip since he got his biggest smallie ever on that trip. I fished mostly cranks that trip but my biggest fish and smallest fish of the trip both came on soft plastics. Biggest for me was a 2lb 6oz smallie on a 3inch senko. Smallest for me was under 10inches and was landed on a Yum brushhog.
In general, big bait = big fish, may be true but I personally don't buy into that rule. If I were to have a rule I would say match the hatch.(but that is another dicussion entirely.
and actually i caught my biggest bass yet on a micro jig
