Ferrer has better groundstrokes than Berdych, easily
If better means more consistent then ok, but if it means more dangerous/powerful/precise - then no.
"Who is better" could mean different things. Ferrer is a better person, Berdych is a better basketball player.
Career wise so far
- Ferrer. He's been a solid top 10 for years.
After both end their careers - i think Berdych will have achieved more.
It's a classical defense against offense kind of discussion here and while offense is prettier to watch, defense is most often more efficient.
So it's really hard to say. At the moment they're pretty equal. In a few years should be Tbird.