Not sure what you mean by "sluggish". Between the Allez and the Jake you're looking at about a 2 cm difference in chainstay length and about 4 cm in wheelbase. Combine that with more slack ST and HT angles and the extra weight, and the Jake is going to feel quite a bit less nimble. The Jake's wheelset is likely a good bit heavier which you'll feel on acceleration. Depending on your setup, you're riding position is likely less aero which you'll feel at higher speeds. I went from doing longish (40 mi) road rides on a CX bike with 25c slicks to a 2 lbs lighter true road bike (on the exact same tires) and I could definitely feel a difference. In terms of actual performance, I picked up 1 - 2 mph on my average speed.