How are you charging your electric motorcycles? If its from a single phase charger at home it will be from 230 volts. The loss from the power station to your house will be on average 12% in the UK. The efficiency from the 230 volt single phase supply to the wheel depends on the manufacturer and I don't have any figures for motorcycles but for a car its generally in the region of 60 to 75%. Some manufacturers claim higher efficiency (Tesla), some when measured have been in the low 40%s (Renault). Part charging of the batteries is a lot less efficient generally. Charging from a 3 phase supply is generally more efficient. Electric vehicles generally weigh a lot more than the equivalent gas engined car so will consume more energy. A Nissan Leaf for instance weighs more than a Nissan X trail SUV.
I don't personally understand why anyone would pay £ 10 to 20k for a motorcycle with a range of 60 miles.
I don't know if I've mentioned this, but I am not concerned by efficiency. I don't understand how you can claim that a petrol engined vehicle can consume less energy, when 60% of a petrol engined vehicle's input energy is wasted overboard as heat. You can calculate the figures for your vehicles. For my car I am currently getting 5 miles per kWh. For my bike, it's more like 10 miles per kWh and whether that is good or bad has no bearing on whether I like riding it. If people want to drive a 5.7 litre V8 they will do so - regardless of whether it's less efficient than a 1 litre petrol car. If efficiency were uppermost on bikers minds, would the Triumph Rocket III exist?
Whether you personally understand it or not, my motorcycle does everything that I need it to do. It does my 15 mile commute easily. It does the 30 mile trips out that I do regularly to the various bike meets in the area. It's small, light and agile so can cut through traffic easily. I don't do touring, so refuelling en route isn't a problem. It costs peanuts to run ( about 0.3 pence per mile) and cost no more than I would have paid for a petrol bike anyway but with no maintenance, no VED and virtually no fuel cost. I would rather spend most of my money on the bike than burning it on fuel. There are no hassles with going into a petrol station, queueing up behind car drivers getting £70 fuel, a scratch card and a Bounty bar and then being asked to take off my helmet because they don't serve people if they can't see their face (possibly changed now post covid). It's quiet and doesn't disturb my neighbours at 06:30 in the morning. It's quick enough so that I can keep ahead of all the traffic that I can squeeze past, turning a 45 minute commute through town into a 25 minute commute.
I honestly don't know why people wouldn't buy one (both bikes cost less that £10k, one of them was less than £4k) for commuting. I would rather put all of my money into the bike than spending loads of money on fuel. Of course I wouldn't take one for touring but I'm not a motorcycling touring person anyway. If it does everything I need it to do, why look elsewhere?