like docvizzo said the best way of winning with nightmare is to turtle and whiff punish..
if i want to play rushdown-style i pick leixia..
if you want to play troll-style pick voldo =D
nope..they left on purpose..u dont lose connection magically 2 hits before dying
then encounter the same player and they do the same shit and hatemails you
and no they dont have bad connections..i only play ranked against EU players with +4bars