Mine are the same size but I did have a lil bit of trouble picking up the front sight. I ordered these from CGW
019-425 Tritium Front Sight
00018-590 Tritium Rear Sight
Front sight appears bigger but I think it's because of the white outline.
The front sight is much easier to pick up now.
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Yeah I noticed the white dots on my other pistols are similar proportions to the P-10 sights. I think my issue is the front post is so thin that the front dot fades away. I thought about trying the CGW sights hoping the larger dot helps like it did you.
This is the CZ sight picture.
And this is one of my other pistols.
Notice this sight post is wider and taller so there is more black background to pick up the white dot.
I'm not sure why CZ makes the post so thin compared to the size of the white dot. Hopefully the CGW front post will help.