Probably aye, but bikes chew tyres at the best of times I guess. Not sure if it's a buying consideration, but it would be worse yeah.
848 wears a front quicker than a rear and quicker than a 1098 rear, no idea if 899 is the same with super corsa
Mine seem to be wearing equally. I reckon I've got another 600-800 miles in mine which will take them to 3000'ish