Yes, easier to beat because the FCP is weak against shots in the first 10 or so seconds. I agree with CE that it seems there is a switch at some point from FCP to M2M.
Not easier to beat because it's fast. Both OF and slow pace give your team better looks for a shot.
In slow offense, players will wait for a very good look to attempt a shot. If your OF isn't good enough, the very good look will never come and players will force a last second poor attempt with low success probability.
You need a better OF in slow pace because you aim for very good looks not specifically because it's harder to beat the opponent. Conversely, in a fast attack, you are not beating your opponent more easily, you attempt shots with lower probability.
IMHO, regardless of tactics, the most important against FCP is handling/passing which translates into OF. With a high enough OF, it's a walk playing against FCP whatever tactical options you choose. In a close game, I believe fast pace is better because first opportunities are extremely good because the FCP doesn't defend against shots better but defends passing lanes, shots are actually easier.
The way you put it, it's always better to play fast against any defense which might be true for teams in development.