comparing lines in file

Shell Programming and Scripting
1

i have 2 files and i want to compare
i currently cat the files and awk print $1, $2 and doing if file1=file2 then fail, else exit 0
what i want to do is compare values, with column 1 being a reference i want to compare line by line and then still be able to do if then statement to see if worked or failed.
the values not matching is a success
the values matching is failure

file 1

scott 1.4
suzy 3.5
josh 5.3
amanda 4.2
luke 2.1

file 2

scott 4.1
suzy 3.5
josh 5.3
amanda 2.4
luke 1.2
2 
grep -f file1 file2 | awk '{print "failure: ", $0}'
failure:  suzy 3.5
failure:  josh 5.3