If you were to be more defensive, suspense(mental uncertainly,anxiety;-excitement as to a outcome-) will built up.
This is important in gameplay since there is the knowing/acknowledgement that this style is possible and used(defensive). Your opponents did not take much advantage of this style or incorperated it. If you incorperate it to your gameplay, affinity of them becoming defensive as you now turned, will allow the experience for them to see what works well with their characters.
-YOU CAN'T JUST TELL THEM TO PLAY MORE DEFENSIVE(they probably will forget/undermine it unintentionable in the excitement of a match), THEY HAVE TO SEE/EXPERIENCE WHY THEY HAVE TO PLAY THAT WHY SO THEY CAN GET BETTER BY UNDERSTANDING WHAT FIGHTING STYLES GO WITH WHICH CHARACTERS.
-OR ASK HIM TO DESCRIBE/TELL WHAT ALL CHARACTERS FIGHTING STYLES ARE JUDGING BY THEIR VOICES/SOUND MOVEMENTS NOW THAT HE USES ATS'(the oldschool way).
so now for the tourny part...offensive style for CF since there is always the high chance of that because theres a inclination to playing like this and it's alot of fun playing a aggressive/offensive CF, works out very well.
-I would say to atleast allow yourself to be more defensive when playing the new guy so he knows he can play that way to; like I said earlier in this reply so he can find out what's the best fighting style for the characters of his liking(it makes it more fun this way if he has a chance of winning to).
If you guys do this, I promise you will enjoy your matches more =) with him.
I hope this helped
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CLASS OF 2009!!!