Systematic Chaos was actually pretty good, I was surprised after Octavarium was by far their worst album ever and had nothing good on it. I like it more than SFAM and less than Falling Into Infinity, it's definitely better than their last several. Regardless, they put on a pretty good show and they tend to attract bigger crowds than Opeth so I think the extra exposure will be good for them. Not to mention it's always funny when the minivan driving prog dork dads have to listen to growling. I'll definitely be going to this tour if it comes to MN.
Oh, and Mike Portnoy seems to basically worship at Mikael's feet so I'm sure they won't be squished off the stage with a 20 minute set or anything.