Can anyone tell me the reason of darker jpegs for same settings?

Dear Guys,

I know I opened another thread for this but, this time I want to share results takes with 2 cameras under same settings, Fuji is 2 or 1.5 stop darker, why is that so?

If this is the case, then I shall return this Fuji!!!????

Canon 550D and Fujifilm X-E1

both 18mm, f4, 1/30, iso400, Auto WB

Canon

Fuji X-E1