From my minimal experience with NSR's I would say that the dry clutch is better than the wet clutch in every way except one.

It looks great, sounds great, feels great, but it sure does wear out quicker than the wet clutch.

I have a box full of worn out dry clutch steels, frictions and springs, including damaged baskets, inner hubs and pressure plates. Whereas I have another box full of excellent condition wet clutch parts that nobody has the slightest interest in.

One things of interest is that the bloke I had many an NSR battle with back in 94~96 (Mr. Christmas Vilaroj) never once used a dry clutch. He even won the Macau 250GP on full HRC NSR250 F3 four times, all the time on the wet clutch. He claimed that the dry clutch just wasn't worth the trouble. Different strokes for different folks I suppose.