Wordpress is like a high-tech utility van. You can do a lot with it. The whole family can fit right in, with all their luggage and a few other things that you might need for the trip. If you need more room, simply attach a trailer and you are good to go.
Blogger, on the other hand, is like a bad-ass Harley. You can't add on much to it as you would with a luxury RV, otherwise, it becomes something else. It's agile, powerful and efficiently gets you where you want to go. Fast.
It does what it does best. You hop on to it and just ride.