- NHL: 1930-40; 10 seasons, 7 quality[1. By modern standards of PPG]
- 120G, 141A (22nd All Time at his retirement) for 261P (23rd) in 454 games; 32.2 PS
- At his retirement, Gagnon was 18th All Time in APG and 24th in PPG[2. Minimum 300 games]
- Era: Gagnon is 5th in Goals, GPG, Points, PPG, OPS and Games, 3rd in Assists and APG, and 6th in PS[3. Of the 8 players to play in at least 450 games between 1930 and 1940]
- 82-game average: 21G, 25A for 47P
- 3-year peak (1936-39): 48-game average of 16G, 19A for 34P
- Playoffs: 12G, 12A for 24P in 32 games
- Adjusted: 209G, 323A for 532P
- Adjusted 82-game average: 38G, 58A for 96P
- Traded thrice in his prime and once after.
- Scored 20 goals once
- Top 10 in Goals twice
- Top 10 in GPG in twice
- Top 5 in Assists once, Top 10 twice
- Top 5 in APG once, Top 10 twice
- Top 10 in Points twice
- Top 10 in PPG.
- Best Player[4. Led the playoffs in goals] on one Champion (’31 Canadiens), Top 3 Forward[5. By points] on one Final Four (’37 Canadiens), Top 6 Forward[6. By points] on one Final Four (’32 Canadiens)
Gagnon had a great playoff run, but that’s about it.