I assume 2 makis being highest tier, not getting the 1 free one you normally get from the event, and 1 more from placing in the 2nd tier.
As a few extra notes to what Yuzuru said. Before you are matched up, you choose a difficulty you want to play. After that is selected you are given a song from the pool and some opponents to play against. Also, the amount of pts you get is dependent on both your relative score in your match up and your rank in the song (c,b,a,s). Make sure you can s rank all songs of that difficulty consistently.
About match ups, if you don't play too much, matching seems to be fair, but as soon as the game thinks you belong with stronger players, matchups become sort of random. Example, a guy beat my ex fc score by 120k.
As for loveca, remember it depends on how much max lp you have. Each hard song on average will give you 220, while ex will give you 360 for 15lp and 25lp respectively. So if you have 60 lp, expect about 880 pts per loveca.