Road bike gravel grinder vs. drop bar MTB....

I just finished a road bike for gravel riding, an old Schwinn World Sport fitted with 29inch MTB wheels and 47mm Continental tires. I really like the way it rides and it handles great in loose gravel.

Image: http://imagizer.imageshack.us/v2/800x600q90/923/bFHySd.jpg

I have this ('88?) GT...