With each ball being in box condition the Blue Vibe is the strongest of the three.  From what i've been told the Emerald Vibe is a tad stronger on the backend than the Cherry Vibe.

Most bowling balls on the market today can cover most conditions with the correct surface prep.  I feel when you buy a bowling ball today, your buying a reaction shape.

I know ball companies still market there equipment in terms of oil handling.  For example the Blue Vibe came out as a light oil ball.  With the correct surface grit the Blue Vibe can be used on some heavier longer patterns with ease.  Like I said your buying a reaction shape not so much it's oil handling capabilities.