If he could be counted on for 10 WAR per year, then yes, $80 million/year for Trout. He was responsible for about 40% of the Angels' WAR last year, so he is "worth" 40% of their payroll. However, there is risk involved, for instance $26 million to Josh Hamilton last year for 0 WAR. Clayton Kershaw is getting paid $35 million/year to generate ~6-7 WAR so it wouldn't be a shock to see Trout's next contract exceed $40 million/year.