Everyone will have a different opinion of sufficient. Maybe I should say "adequately" powered instead. I feel 13.8 HP/# adequate, the 12 HP/# of my 987 is "sporty", and 7.5-10 HP/# is just about right
Power doesn't make a car inherently easier to drive "on the limit", though they are more forgiving of scrubbing off speed.
I agreee, it does seem to be a good handling car. Acceleration and cornering are two different types of fun, which don't have to be mutually exclusive, so I would preferr to have both!