What classes are you playing? What level?

Figure out what goes wrong when thepain comes, and re-write your macros to compensate. if your main is dieing and then you fall apart try this macro.

/clearfocus
/focus Jussa
/focus [modifier:lalt] Jusab
/focus [modifier:ctrl] Jusac
/focus [modifier:shift] Jusad
/focus [modifier:ralt] Jusae
/fol focus

if my main dies a quick Alt+F11 and switch to Jusab as my main and it sets the focus on all my followers to Jusab and follows him. Just change the names to your toons.

PvP is diffrent than PvE beacuse you have to have your macros set to maximum eficency if your going to live long enough to kill one person and move on.

There is not much else i can help with given what info you provided. 10 players on you and you probaly won't make it but don't put your self in the situation that you have to fight this way. Kite them around that leave 5 members on your team free to get the flag. I have 4 priests and a Pally i'll just fear and dot and let you run off and die. if they are at range you just silence and dot and MB. you can usualy kill people before they can reach you so by then it should be 5vs5.