comparison or comparing?

[syflysun1]

Many investors base their choice on comparing bond yields with the dividends available on common stocks.

Many investors base their choice on comparison bond yields with the dividends available on common stocks.

Any difference? is first one focused more on the action "compare?" Second one more on the result "comparison."

[Kweku.Amoako]

yes

base X(Action) on Y(Condition)

In this case, X = Their choice on comapring bond yields with the dividends available

Can not be "comparison" because it is a noun. You need a verb to show the action

[RonPurewal]

Many investors base their choice on comparing bond yields with the dividends available on common stocks.

Many investors base their choice on comparison bond yields with the dividends available on common stocks.

Any difference? is first one focused more on the action "compare?" Second one more on the result "comparison."

the second of these is completely ungrammatical. you can't say "on comparison bond yields with..." because you just can't use ANY noun in a manner remotely like that.

if you said "on a/the comparison of bond yields with the dividends available...", then you might have something (although this still wouldn't be as good as the original, since it de-emphasizes the fact that it's the investors themselves who are doing the comparing).