459 matches of Age of Empires II are on Kowalski's record. With 220 matches as flank, Kowalski holds a 52.7% win rate. Kowalski's RM Team record stands at 53.3% wins over 169 games.

Kowalski represents Chile in ranked random map team, most often selecting Teutons (66.9%). Kowalski plays at 957 in RM Team, wins most with Teutons (54.9%), and excels on Arena (55.6%).