Here's the breakdown:
You can grab someone while taking damage.
you can grab through an attack.
You can grab someone while they're rolling.
all of the above allows grab happy players to turn the match into a game of cat and mouse
Grabbing is fast and has almost no recovery time allowing it to be spamed.
The small risk of using the grab offers a high reward
So......is it too easy? Tell me what you think.
Not to mention they are interrupt-able if attacked by another opponent.
It may be because of lag, but i have been able to grab someone through an attack most of the time. There are few a exceptions but based on my experience, grabs aren't all that interuptable.