its not easy that storymode whit the roaster i have not sure how too show what i have here.
when i meet a lv that is 160 or lv 140 then its some what hard to beat them becase i dont have all the covers. i can beat deadpool event 
Just focus on having one or two stunners in your teamsetup and higher lvl guys will melt
2*storm is quite good
Agreed. Stunners can help with taking on higher leveled teams. 3* Spidey is a cheap miracle worker.
Apart from stunners like 1-star Black Widow and 2-star Storm, another very useful character for fighting high-level team at your level is 2-star Original Black Widow. Her AP steal is great for shutting down the enemy’s powers and her blue helps to disrupt goon CD tiles and keeps your team alive. But make sure that your Original Black Widow doesn’t have more than 3 purple covers. Higher level purple will steal more AP but also cost more AP which makes it much less effective.