User blog comment:Megames1/Against the Meta INVINCIBLE! Plus More!/@comment-4947142-20121004161943/@comment-3486816-20121006200741

^vlad has the sustain and tankiness to go top, and appreciates that it's more of a farm-fest than mid because he's a mid-late game champion. Most other mages have neither of those things, and go mid because it's safer for them and opens up ganking options in other lanes (which vlad doesn't typically take advantage of).