Grow Difficulty Ratings

Howdy......

So many seeds/strains to pick from.
One thing that has me a bit stumped are the ratings on grow difficulty.
What can I expect with an 'Expert' or 'Experienced' rating?
Does this mean high fail rates or rather that all components need to be dead on the money to keep any of 'em surviving & thriving?

Thanks for any info
Grow ON!

you know now that you say that I don't know I just assumed to stick with beginner seeds because......I'm a beginner(I'm pretty sure that's not right spelling JGH(just got high) <<<<my new abbrev.

some strains are sensitive. they react quicker to problems. they are less forgiving. if you make a small mistake it could cause big problems. things like feeding, watering, mildew, pest resistance, ..........

makes sense thanks for the info. fdd