customization is restricted in blogspot and so many features are not there in blogspot when compared with Wordpress. wordpress has lot of customization features and lot of plugin to blog as you wish.
I think that blogger is better than wordpress in every way. It is easy to use in technical way and since blogger is owned by Google they also support Ad Sense.
Yes, As per my knowledge and research that Word Press is more better because Word Press considered as Web 2.0 Strategy and it's demanded thing right now on online Zone. So my personal belief that Word Press is far more better than Blog Spot due to it's functionality.
I think blogspot is better than wordpress becoz wordpress has lots of limitation and also blogspot easy to handle.