No, for two reasons. 1, What you're quoting is a theoretical maximum, actual rates are substantially lower. 2, The latency is brutal. Most of the net (especially as viewed from mobile devices) is very small files delivered frequently, which makes latency a much bigger factor in overall experience than speed. Ping times on even the strongest 3G connections are much higher than even an average wired broadband connection.

Also you only pay less for your wireless internet because the average consumer uses WAY less of it than wired. Per megabyte we're spending far more on those wireless data plans, and as soon as the rate of use grows I think we'll see them start becoming metered.