Interesting,
Two comments right of the top of my head.
Based on my past experience in Judo comps i feel that-
1.) You were in a low level comp based on the way you and your opponents played .
I entered a several Judo events. If you enter a shia for gaining points to the Olympics its a far different experience then an invitational with local chubbies
. You basically lucked out because you were in the heavies also. Like in JJ, many of them lack technique , opting for power moves, so you didnt sail. That "sloppy" Kessie will become your worst nightmare in a higher level comp. If you got caught in that one during a takedown, a bette player will land you into a perfect one from Haraie or Tae Otoshi and you wont make it to his back.
2.)If you were standing when shidoes were called, You were shidoed for stalling,or holding the legs for more than a second. On the ground , it would likely be for rough play.
My first comp I stiff armed, rather than attempting throws and shot legs (its illegal to drive forward more than a second or so at the legs.). In my case I got called for stalling once and thats how I lost as no ther points were scored. . JJ guys and wrestlers with little or no Judo time get called for these infractions so you are not alone.
My advice would be for you to get better at upperbody takedowns- and defending them -thats much of the emphasis in sport Judo tournament. Be sure to practice combination throws, since only sucky guys will go down from single attempts. Also practice reversals into pinning, so that your opponent will beforced to play from the ground- your specialty, otherwise they will reset you before you can get your game going.
The bottom line is being sport specific. I dislike some Judo rules.
Sport BJJ rules can suck too. They call you when you backout of someones gurad rather than continuing to stay down and pass it . I think that is ludicrous if you have attempted to pass for awhile . If the guard puller cant keep it- then he was inferior IMO. Oh well.