Continuum Bar Settings

Looking at the IZSS cheatsheet I noticed that the forex setting is (3/12/60). I thought the (8/10/5) setting was suitable for forex also. Explain the difference please.

Different bar settings are used for different markets. From what I see and understand, Futures markets use a larger bar/shorter time frame due to the faster price movement. Forex tends to move a bit slower (assuming no high impact news) and in smaller increments.