It may be that your search is pulling up pics of other morphs or morph combos because mojave and lesser do not look alike at all imo. The 3 things that stand out the most as being completely different are color, pattern and brightness lol! I'll look up a couple pics to help you see.
http://www.worldofballpythons.com/wi...e=70&female=73
If you want more examples just click whichever you want to look at, you can also see what the babies would be if you mixed them, pretty awesome site!
I guess I could see how you could mix them up if your not used to seeing them. But the brightness is definitely the most obvious difference.