Mouse, 79 bytes

?A:?B:A.!" is "A.B.<["less than"]A.B.>["greater than"]A.B.=["equal to"]" "B.!$

When strings are encountered they're immediately written to STDOUT rather than being put on the stack. The stack can contain only integers.

Ungolfed:

? A:                            ~ Read an integer A from STDIN
? B:                            ~ Read an integer B from STDIN
A. !                            ~ Write A to STDOUT
" is "
A. B. < [ "less than" ]         ~ If A < B
A. B. > [ "greater than" ]      ~ If A > B
A. B. = [ "equal to" ]          ~ If A == B
" "
B. !                            ~ Write B to STDOUT
$                               ~ End of program

About Mouse

Mouse, 79 bytes

?A:?B:A.!" is "A.B.<["less than"]A.B.>["greater than"]A.B.=["equal to"]" "B.!$

When strings are encountered they're immediately written to STDOUT rather than being put on the stack. The stack can contain only integers.

Ungolfed:

? A:                            ~ Read an integer A from STDIN
? B:                            ~ Read an integer B from STDIN
A. !                            ~ Write A to STDOUT
" is "
A. B. < [ "less than" ]         ~ If A < B
A. B. > [ "greater than" ]      ~ If A > B
A. B. = [ "equal to" ]          ~ If A == B
" "
B. !                            ~ Write B to STDOUT
$                               ~ End of program

Mouse, 79 bytes

?A:?B:A.!" is "A.B.<["less than"]A.B.>["greater than"]A.B.=["equal to"]" "B.!$

When strings are encountered they're immediately written to STDOUT rather than being put on the stack. The stack can contain only integers.

Ungolfed:

? A:                            ~ Read an integer A from STDIN
? B:                            ~ Read an integer B from STDIN
A. !                            ~ Write A to STDOUT
" is "
A. B. < [ "less than" ]         ~ If A < B
A. B. > [ "greater than" ]      ~ If A > B
A. B. = [ "equal to" ]          ~ If A == B
" "
B. !                            ~ Write B to STDOUT
$                               ~ End of program

Mouse, 79 bytes

?A:?B:A.!" is "A.B.<["less than"]A.B.>["greater than"]A.B.=["equal to"]" "B.!$

When strings are encountered they're immediately written to STDOUT rather than being put on the stack. The stack can contain only integers.

Ungolfed:

? A:                            ~ Read an integer A from STDIN
? B:                            ~ Read an integer B from STDIN
A. !                            ~ Write A to STDOUT
" is "
A. B. < [ "less than" ]         ~ If A < B
A. B. > [ "greater than" ]      ~ If A > B
A. B. = [ "equal to" ]          ~ If A == B
" "
B. !                            ~ Write B to STDOUT
$                               ~ End of program

About Mouse