Hmm. I feel those low percentages and absence from major dictionaries should gazump the counts. Not a big deal.

@@ -25,0 +26 @@
+<re_pri>spec1</re_pri>

We decided on a 1M n-grams threshold for spec1. 解る and 判る meet this easily (when inflected forms are included).
But I don't think we can adequately explain the nuances of these forms in a short usage note.

@@ -11,0 +12 @@
+<ke_pri>spec1</ke_pri>
@@ -14,0 +16 @@
+<ke_pri>spec1</ke_pri>
@@ -29 +30,0 @@
-<s_inf>解る is used for comprehending; 判る is used for distinguishing or judging</s_inf>

わかっ	14795258	55.8%
分かっ	9635157	36.3%
解っ	1114047	4.2%
判っ	966361	3.6%

While that information about 解る and 判る is interesting, it's also rather marginal. GG5 and ルミナス don't even show those kanji forms and the kokugos downplay them. (I'm dropping the "spec1" tags).
I suspect it's probably adding some unnecessary clutter to the entry.

@@ -12 +11,0 @@
-<ke_pri>spec1</ke_pri>
@@ -16 +14,0 @@
-<ke_pri>spec1</ke_pri>
@@ -26 +23,0 @@
-<re_pri>spec1</re_pri>

* meikyo: 「判」は物事がそれと判別・判断される意で、「違い［善悪］が判る」「先のことは判らない」などと、「解」は理解できる意で、「英語が解る」「気持ちはよく解る」などと好まれるが、今は一般に「分」。「文学が 解る／判る」では、前者は単に理解する意だが、後者は傑作・駄作などをよく区別して理解する意となる。
* https://japanese.stackexchange.com/a/117:
    分かる: understand, know (a concept, a fact, etc)
    判る: (think 判断できる) judge, discriminate (between right and wrong, between two similar things, etc)
    解る: (think 理解できる) comprehend (a concept, an answer, etc)
* https://hinative.com/questions/995550
    分かる　is a very common term for the word "understand" (the fact, the concept etc...)
    判る　if you will look at the kanji you will think the word 判断できる which means judgement, discriminate, knowing the right from wrong, knowing between two similar things,
    解る just think the word 理解できる which means to comprehend like knowing the answer of the problem etc...

@@ -31,0 +32 @@
+<s_inf>解る is used for comprehending; 判る is used for distinguishing or judging</s_inf>