for example, lets say that I held the
Q[img]/images/graemlins/spade.gif[/img]J[img]/images/graemlins/spade.gif[/img]T[img]/images/graemlins/heart.gif[/img]9[img]/images/graemlins/heart.gif[/img]
You hold Q[img]/images/graemlins/heart.gif[/img]J[img]/images/graemlins/diamond.gif[/img]T[img]/images/graemlins/spade.gif[/img]9[img]/images/graemlins/club.gif[/img]
We both Floped the nut straight on the following boart
9[img]/images/graemlins/spade.gif[/img]8[img]/images/graemlins/heart.gif[/img] 7[img]/images/graemlins/club.gif[/img]
You would be thinking "Man, this is an awesome board for me, I have the nut straight with a redraw to the higher nut straight, I rule at life and will get all in here".
The result is that I am going to make a backdoor flush about 5% of the time here and win the entire pot, whereas you have 0% chance of ever winning the pot, only a 95% chance of splitting it.
http://twodimes.net/h/?z=1656022
pokenum -o qh jh ts 9s - qc js th 9d -- 9c 8s 7h
Omaha Hi: 820 enumerated boards containing 8s 9c 7h
cards win %win lose %lose tie %tie EV
Ts 9s Qh Jh 72 8.78 0 0.00 748 91.22 0.544
Js Qc 9d Th 0 0.00 72 8.78 748 91.22 0.456
There are many other situations where having suited cards are helpful but this was just one example.