Using 64bit is certainly not 'superior' to using 32bit browsers. There's nothing inherently superior about 64bit. You are using twice the amount of RAM in a 64bit program as compared to a 32bit program, so unless you have 10+GB of RAM, it's worthless (32bit can use up to 4GB of RAM, and if you are using 64bit with 8GB of RAM, you are actually not getting any extra RAM because of the fact that the memory registers are double the size, and thus practically, your 8GB under 64bit is the same as 4GB under 32bit).