Be that as it may, there is uniformity (3,3,4)
I believe the answer is:
all the same
'there is uniformity' is the definition.
I can't judge whether this defines the answer.
'be that as it' is the wordplay.
I cannot quite understand how this works, but
'be' could be 'am' and 'am' is found within the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
'may' is the link.
Can you help me to learn more?
(Other definitions for all the same that I've seen before include "Not material" , "even so" , "everyone is in uniform" , "like peas in a pod?" , "in spite of this" .)