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4 strokes are a lot easier to ride, and a lot more controllable. They have a lot of bottom end. They have engine braking so when you let off the throttle it won't keep coasting. They are really heavy, a 250f will weigh around 230 lbs. A TTR230 will weigh over 250. They don't tend to get the front wheel off of the ground easy without the clutch.

2 strokes are harder to ride, but sometimes more gun. They have pretty much no bottom end power. There's no engine braking on them, so it'll keep coasting when you let off of the throttle.

All two-stroke engines running on a petrol/oil mix will suffer oil starvation if forced to rotate at speed with the throttle closed, e.g. motorcycles descending long hills and perhaps when decelerating gradually from high speed by changing down through the gears. Two-stroke cars (such as those that were popular in Eastern Europe in mid-20th century) were in particular danger and were usually fitted with freewheel mechanisms in the powertrain, allowing the engine to idle when the throttle was closed, requiring the use of the brakes in all slowing situations.