What's the difference? - Triple Record chainset with small ring in 36T only vs. Cyclocross Record chainset

Triple Record chainset with small ring in 36T only

Crankset

1049/5

Cyclocross Record chainset

Crankset

1049/4

Shared parts

These parts share the following 3 parts:

752

Not yet documented

752

Road chainring for 1/2" X 3/32" (2 mm.) chain.

Chainring

753

756

Not yet documented

756