The King of Fighters XIII

The biggest difficulty in going for this trophy is dealing with King of Fighters XIII's netcode. As mentioned multiple times this game has very strict timing and fast inputs, trying to use high level combos may be difficulty making this a difficult feat for moderate players. Please utilize these tips in approaching Ranked Match:

Team Order
While this may not be like Ultimate Marvel vs Capcom 3 while you don't have nasty assist everywhere so it may not seem like team order matters... it actually does. The two important character of the team will be your point character and your anchor (first and last character). Depending on the characters on your team you want to have a good meter building character on point for a anchor character such as Kyo Kusanagi who can make use of all that meter. Your middle character is sort of like a neutral between meter building and actually using the meter but you don't want to leave your last character with no tools at their disposal.

Gauge Management
Remember that the gauge doesn't fill up as fast as games such as Blazblue and Ultimate Marvel vs Capcom 3, while it does give us much more than Street Fighter IV the same also applies to your opponent so look out for his and your meter and look out for any drive cancel mix ups that may pull out.

Spacing / Footises
Just like in various other trophies you want to space out your opponent well with attacks and throw out a when you see an opening.

Match-Ups
Know the characters you are going up again, know how fast their projectiles are, how well their pressure game is and how your character(s) can manage against it. Only through experience will you be able to understand your characters capabilities and how they should be approaching specific other characters.

Quit to the XMB:
I DO NOT RECOMMEND THIS METHOD, KOFXIII's was already easily the target of constant disconnections due to the 3 on 3 matches giving players more than enough time to decide to escape to the XMB. Your win streak towards this trophy will still be maintained even after you disconnect to the XMB during a match however this will give you a bad reputation.

I do not encourage players to ragequit using this method for the sake of their trophy however if you are feeling desperate and want to maintain a high win streak (such as 8 or 9) for your trophy than you have the option to do so.