Um, no. The reason it's still ranked lower is because this list has hardly been updated at all. Heck, most of the changes alexwolf mentioned
here have yet to be implemented. Life Orb Latias is not better than Mega Latias at all. It gets a little bit of extra power but also suffers Life Orb recoil, misses out on tons of bulk, and takes more damage from Knock Off, which is a pretty big deal. Heck, there have been people arguing that Mega Latias should move up to S or at least A+, either of which would put it on part with or above regular Latias (and that's assuming regular Latias doesn't drop later on down the road).
Also, please don't be a minimod. There's nothing wrong with asking a question about the viability rankings in the viability ranking thread.