Help me spot the differences!!! (please!)

Ok so this week has been quite strange, lots of not great things have happened. I wont bore you with the details, I'll focus on the good stuff - my car is back up and running better than before - and for only $71... I am NOT going to complain about that when the two quotes I had to fix it were $250 and $280!!!

Now Im going to ask you all a question... are these two cats the same!? I've never been faced with such an interesting query! a quick background- this cat has come to call my office home, and the other photos are from a family who's cat it may be.
For a tabby its pretty close, the grey stripe markings are nearly bang on - and the man has sent a few photos where I think the cat is still very young so hes not as big and the colouring is a bit lighter... I am HOPING LIKE MAD it really is his cat but dont want to get anyones hopes up, and I think I'm tying to think its NOT! but let me know what YOU think, and I think a random comment will deserve a small rak of something! either a cat or dog *thing*








ALL THE PHOTOS ON THE LEFT ARE THE "LOST" CAT AND ALL THE PHOTOS ON THE RIGHT ARE THE PHOTOS I'VE TAKEN.

OH and P.S W00t!!! its coming up my birrrrthdayyyyy, countdown is on- im not ashamed of my birthday and i make it well known, however I did have to ask someone else how old I was ! I love birthdays :D especially my own!