It’s people farming you for ingots/hero XP in casual PvP. It reports back weirdly and I don’t know why, but I also get those blobs of wins sometimes. Some genuine losses will be people accidentally setting a high difficulty, or using a weak but fast team (e.g. Rowanne and 3 flame bots, and your bots luckily destroy Rowanne’s armour so they just retreat). There’s no downside to retreating in casual.