Iron Cross vs Planche

In the (I hope so) near future, I plan to work on developing planche and Iron cross. I found this on http://www.drillsandskills.com/ :

Iron Cross: B value skill; FIG Code Group IV; FIG Code Box 12

Planche on Floor: B value skill; FIG Code Group I; FIG Code Box 22

Is this mean that planche on floor is harder than iron cross? Can you even compare these two elements? Does height and weight of individuals makes one skill harder than other (I heard that crosses are not that much affected by height as levers)?

I apologize in advance if you found this question stupid. I do not know much about GST, but I am very curious 

It means a planche on floor gets you .2 added to your score, and a cross gets you .2 added to your score. 

Which is 'harder' depends on the individual.

http://figdocs.sportcentric.net/external/serve.php?document=4023

Roger's drillsandskills site is old but a Cross is still a "B" and a straddle planche on rings is a "B" but a legs together planche on floor is a "B" while the straddle planche on floor is an "A".

I have seen some taller gymnasts who can do an Iron Cross but not a planche.

I have also known a gymnast who told me Maltese was easier for them than planche on rings. Yeah, he commented that though it seemed odd that's how it was.

Blairbob said:

I have also known a gymnast who told me Maltese was easier for them than planche on rings.

very true!!!

It is the same for you too?

Really makes no sense to me that a maltese is easier than a planche!

for me a maltese is easier on rings. i cant even hold a full planche...

on pbars its fun!

andiswf said:

for me a maltese is easier on rings. i cant even hold a full planche...

on pbars its fun!

Could it be an issue with balance rather than strength for the rings full planche compared to your maltese?