Text file content match if else image Resolution

I'm working on a project where I need to cat out the images and videos Resolution if they are not equal script should exit.
I've used command to cat the image Resolution. In this example I've 2 images. In a directory

find $PWD -iname "*.jpg" -type f -exec identify -format '%i %wx%h\n' '{}' \;|awk '{print $NF}'

OUTPUT
1280x720
640x362

I want them both to match if the file size is say it should say Okay else Check the file resolution and exit.

I tried the command to convert the output in to two variables a1 and a2. But it is not working. I tried to copy paste the output to the terminal than it is working. Please help

 find $PWD -iname "*.jpg" -type f -exec identify -format '%i %wx%h\n' '{}' \;|awk '{print $NF}'|egrep -n "x"|sed 's#:#=#g'|sed 's#^#a#g'|paste -sd ";"|bash