My thoughts exactly. I went to check the peripherals as well.

To reiterate what bondon said:
Looking at last years numbers, you basically give up about 100 hits (10 fantasy points).

Seeing as how goals = assists, Callahan in a year you think he may have done VERY WELL, is a VERY LOW year for Getzlaf. Say Callahan stays at 55 pts next year, and Getzlaf bumps to 70 (easily), you're already winning by 5 pts.

The only other side that favours Callahan is SHG/A, and GWG. But GWG isn't very consistent, so to expect 9 from him is a lot. And then if you think he scores fewer goals, it reduces the GWG/SHG numbers even more.

You win

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16 team roti keeper (yr 5/5, keep 6)
G, A, +/-, PIM, PPG, PPA, SHG, SHA, GWG
W, GAA, SV%, SO
2c, 2lw, 2rw, 4d, 2g, 8bn

C: Stamkos, Backstrom
LW: Sedin, Landeskog, Ott (C), McGinn
RW: Purcell, Brunner, Stewart, Boyes (C), Hornqvist
D: Letang, Byfuglien, Streit, Carlson, Beauchemin, Barrie
G: Ward, Schneider, Ellis