No one is expected to win as a beginner, too hard may not be the right word. Maybe I'm looking for oppressive? See right now, I'm play station all stars. Even though I can perform the most technical stuff in the game(Dante), I get absolutely molly whopped every single match. I like too block, these games make it so blocking is a disadvantage. It is easy to open people up.
With all stars I have much more freedom to dodge and evade, and can learn patterns, so I see myself getting better.
In injustice, BM's J.2 crosses up at really weird angles making the game tough to defend against. If I get my opponents in a corner with trait, I have an inescapable reset(hard to blockable)/(almost a vortex, but if they get hit twice they die.) in the corner so GG to other player, it is
As for the second point, just because it isn't a tournament, and it is online doesn't mean that people, sure it may mean much to people who play consistently offline, but online is my only form of competition, I don't have enough time in my schedule to go to Super Arcade to play locally, and have tried constantly to get a scene started in my area, to no avail.
So yeah there's that.