Car drivers almost always allege speeding against a motorcyclist when a motorbike accident happens. The argument usually goes, "(S)he must have been speeding because I did not see them". You then have the "helpful" witness who assumes the motorcycle was speeding because it had a loud exhaust.
It is impossible to estimate speed at a glance and most of us would have great trouble giving an accurate estimate from watching a vehicle. That is why the police have laser and radar speed detection devices. For speed to be relevant it must have made a material difference to the accident circumstances. Put simply, if someone pulls out 3 feet in front of you then you are having an accident. If they are 30 feet ahead then speed may be relevant.
Speed also has to be taken in context. If you are on a bend, you may not be able to brake and if you do you are likely to sit up and go onto the wrong side of the road. The next thing you know, you are being accused of going round the corner on the wrong side of the road.
Non-specialists and lawyers who do not ride motorcycles are unlikely to understand the mechanics of what happens. They are even less likely to understand how you think in those situations. We can give you the best possible advice, because we ride and so we understand all the issues, why not call us to see if we can help you.