No, the SAP180 is fine for the Focus II and too large for the Focus Sport. The SAP180 will haul an 11 lb 2M airplane just fine, with caveats. Earlier comments in this thread about suitability for upper classes and draggier airframes have nothing to do with its top end power, which is adequate. It has to do with torque and the way it behaves when responding to requests for power NOW.

For example, in the 5th corner of the Masters class hourglass (going from level heading up to the final leg) you can not expect it to respond with great authority when you roll (not slam) power in to carve the corner and establish the line, all the while trying to maintain the same airspeed as you had on the bottom line (or for that matter, on the line coming down and the corner heading into the level segment). You need to give it a bit of a running start when entering the corner, and consequently you have to anticipate handling increased airspeed in the start of the corner. In addition, since it will scrub energy while in the corner, you also have to wait a bit for it to build speed back up while exiting the corner into the first part of the leg upwards. Especially in windy conditions, this just makes it harder to establish the line the way you want to.

It's not that a maneuver like that can't be flown well with this or another 2C engine, but it increases the pilot workload as compared to an engine that gives you the exact change when you request it. It's just a 4C vs 2C behavior, and in the case of the SAP180, since it has a high exhaust timing as compared to, say, an OS 140RX, you have to lead it slightly more than you would with the RX. However, when propped correctly, the SAP180 will put out more top end power than the RX.

BTW, until switching away from 2C glow earlier this year, I didn't fully appreciate how much difference it makes to have a powerplant that behaves as described. You can go a long way with the SAP180, but just understand that you need to factor the lower midrange torque into how you fly it in a Pattern application. It's happiest when it's reving in the low to high 8K range, not so much when it is still trying to get there. Make sense?