Iphone 4s vs Iphone 5

I know, is so many review of iphone 4s and iphone 5, in terms of specs, i think all of people is agree, that iphone 5 is superior than 4s, because mostly specs higher.. But what i want to say, when you typing a message, i believe, some people will agree with me, that iphone 4s is more comfortable for thumb.. That because letter dimension of keyboard is bigger in iphone 4s. 

Okay. Thats from me.. Thank you.