Thank you for viewing my profile...I don't really feel up to talking about myself so instead I'll put up a wizarding 'Pecking Order' which I'm using for my current story, it will change a bit in the next two stories depending on how a character's magic increases. I didn't take skill into consideration, Voldemort can probably duel up to seven Aurors at once even if he's only about three times as strong as the average wizard according to my calculations...

//////////////////////////////////////////////Voldemort, (Dumbledore)

//////////////////////////////////////(Barty Crouch Senior)

//////////////////////////////////Bellatrix, Scrimgeour

//////////////////////////////Flitwick, McGonagall, Moody

////////////////////////////Sirius, Snape

//////////////////////////Kingsley, Lucius, Slughorn

///////////////////////Lupin, Narcissa, (James and Lily Potter)

////////////////////Tonks, Krum, Average Death Eater e.g Dolohov

////////////////Hermione, Average grown wizard e.g Mr Weasley

/////////////Draco, Charlie, Harry, Fleur

//////////Ron, Seamus Finnigan , Ginny, Luna, Neville

This is only a rough guide, magic probably fluctuates depending on several factors such as health and state of mind so there were probably days when Voldemort was more powerful than Dumbledore and vice-versa lol. Heheh, Voldemort is almost three times as strong as the average wizard (I know that doesn't seem like much but try running against someone three times your speed, if such a person exists)

One last thing though, when two characters are in the same tier their duels will probably end up being long and drawn out, the length of a duel would roughly decrease as the characters drift away from each other on the pecking order, with the stronger one usually winning. I've included dead characters to give an idea of how powerful they were when they died.