Note: The only SJ Evo I've ridden was L (I generally ride a M frame, and ride a M 5.7C).
As far as agility goes, I love my 5.7C. It's super playful between corners, super fun in the air and I haven't had any issue lifting the front end when I've needed to (i.e. just before 2/3ft drops to flat, on tech descents, etc). As far as wheelies go, I've never really been good at doing them, always too chicken (about going over the back!)
The only time I had issues jumping the bike was when I first got it, and went out to my local FR area (well built, 1 - 3 meter gaps, huge berms, not overly rough). I usually ride my Phoenix here BTW. On that day it felt like the bike kept kicking me forward, but that was due to two things - rebound settings (set relatively fast compared to my Phoenix) and super low, flat bars keeping my weight further forward. As soon as I'd slowed the rebound down, the 5.7C started to behave really well

On my normal trails for the 5.7C (from super fast flowy XC loops, to techy sandstone meccas), it's as agile as a hummingbird
The SJ EVO I've ridden is a mate bike, and it's not an apples to apples comparison as he's 10kg heavier than me and his bike is a L size. The Evo felt quite "tall" to me, whereas the 5.7C felt right in the cockpit. Even with the extra shock pressure (due to his weight), the bike didn't feel quite as responsive. That said, it wasn't as if it felt bad to pedal, but it just didn't feel quite as responsive to pedal input at the 5.7C. It also (mainly due to the extra pressure again) didn't feel anywhere near as plush as my bike that day.
My mates Evo also didn't feel quite as nimble as the 5.7C, but this could have been due to the longer ETT & reach on the Evo.
But, there are two things that you need to be aware of with the 5.7C that I've noticed. The first, which is mainly due to the way the DW-Link works, is that pedalling through rough chop (i.e. fields of grapefruit & melon sized rocks) can feel a bit stiff. I gather that this is due happening as the DW stiffens up a little already when pedalling, and add some small baby heads to that and it doesn't feel overly plush. Since riding Mach style bikes, if I know about a rough choppy section, I make sure I get a lot of momentum up beforehand, and try and get through it before pedalling. Riding through these sections is plush as, but when pedalling, not so much.
The other is that I've found the 5.7C really LOVES to be caned. As long as you're putting the effort in, you'll be rewarded with super fun times. The downside of that is that if you start to get lazy, it starts to feel a bit flat. This could be due to the amount on travel, but not having ridden anything with this much travel before (this is my first bike over 4") I don't have anything to compare to.
So, all of that said, personally I would pick th 5.7C over the Evo any day of the week

But, of course, I already have!
I hope that helps!