1) The marsdaq "Record" statistics for players stopped updating at some point a month or two ago and haven't moved since. If you check my records by HQ with 1v1 selected you can see that I have 10 expansive wins, 9 robotic wins, 28 scavenger wins, and 3 science wins (50 wins total). But my total number of 1v1 wins is actually 75. This doesn't match my 21 4FFA wins either.
2) Your listed ELO score doesn't match the type of matchup you have selected. If you check bluemagic's elo you can see that he's listed as 1413 ELO regardless of which match type you select, His actual 1v1 elo is much closer to mine, in the 1670ish range.