Just like for motorcycles, 3 cyl is the ideal for both torque and revs. Bi is all torque, 4 is all revs, and the 3 is just in between.
They only lack top end power compared to the 1000cc inline-4 engines which sit in track-focused supersports.
Which is like saying, "I found the Ford Focus RS lacking in power compared to a Porsche 911 Turbo S".