For the most part, bigger HP numbers are primarily for bragging.
Last week, I test drove a 2011 Outback with the 3.6 motor. I was reminded of my original 2013 test driving when buying my 2014 and another 3.6R and the off-the-line grunt. And I also test drove the XT with the 2.0 turbo. Yes, that off-the-line lunge was night, but not really needed in my daily drives. The "basic" 2.5 motor and CVT does quite good at getting ahead at a light, getting up to highway speeds to merge onto the freeway, easily hitting 70+ mph to merge in with traffic on the I-10 freeway without issue.
Like others, the competition is - for the most part - usually about 1/2 second difference to 60.... When I was reading an old MT test of the 2014 Forester Touring vs Mazda 5 Grand Touring, Ford Escape SE (with 1.6 ecoboost turbo) and ... oh, the RAV 4 - there was less than 1 second between the fastest (Mazda at 8.1) and slowest (Escape and Forester at 9) and the RAV 4 was 8.9 .... and the real world is even less about that absolute value. And I remember the other competition being about the same - between 8 and 9, maybe 9.5 seconds, to hit 60 MPH.
But the Forester's strength is not really about how fast it hits speed, but rather that you can move it during ugly weather when most of the competition is slipping and sliding and can't grip even a bit.
Oh, and remember also that the Forester is going to be heavier even if just because of having all the "stuff" needed for the standard AWD system.