matches take considerably longer, not only because of higher survivability but also because camping and playing somewhat defensively is much tougher to counter, and therefore more prevalent in matches.
edit: emblem lord, i see what you mean a little more now, but really it feels like higher mobility in the air coupled with less no dashdancing places the emphasis on spacing aerials more than anything else. while i do use forward b a lot, and his fsmash and utilt are both very good still, there simply is hardly anything anybody can do to punish spaced fairs, whereas most other moves are more punishable. also, the one thing that people arent touching on is the shieldbreaker. it breaks shields a lot more easily, and given the effectiveness of shieldgrabbing aerials, you can trick people into getting their shields broken pretty often, i do it once every couple matches.