These are forgeries without question. There are many things that point to them not being genuine. Also, if you suspect the stamps, why do you not suspect the cancels being forged as well?
See also:
http://www.rjbw.net/suezcanal.htmlFrom the very modern-looking paper (with a grayish-green color besides) used for these, they have the look of being printed on a laser printer. Examine with a magnifying glass, if you are curious.