That's hardly sexualisation. A more significant difference in physiology of the male and female characters only exists in Reach so you can identify each gender easily. Look at Kat, is [i]she[/i] sexualised? (The answer is no unless you like lesbians with buzz cuts and robot arms)

ok now when I look back I guess its not to bad after I have done comparisons to over games so you are right I hope that Bungie will remember this