Is There an Actual & Obvious Difference Between Linux Hosting Solution & ..

My website annual renewal date is due soon & I’ve been window shopping 2 find if other vendors can do a better job than my current host. It turned out that there are a couple of vendors that actually match my current host’s offer and also beat them on price. The only thing is that they provide these services specifically on a Linux system.

What does this mean? Will I be missing out on something crucial if I decide to go with the new vendor?