Majid I'm not sure how you are calculating your numbers.
Let me tell you how a Canadian university handles foreign GPA scores, since I've recently gone through 5 diff admissions.
2.71 is taken on its absolute value, and divided by an absolute 4 or 4.0
2.71/4.0 is 67.7%
I have no clue how you are getting 71. If your going by your university set standards, they will not be acknowledged during the Canadian admission process.
Don't fool yourself into thinking otherwise. Contact as many unis as you can, be honest about your profile and see what they say. Tier 3 and 4 universities will be willing to overlook your gpa, they need the money after all.