How to compare the velocity from lokalizer and from encoder drivers (odometry)? [closed]

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Hello

I have a question regarding the velocity profiles getting from my localizer such as AMCL or Hector Mapping and their comming from the encoders. So I used different methods for pose estimation such as AMCL, Hector and robot_pose_ekf. Than I extact Velocity profiles (linear and angular) based on the pose of those methods. But my problem is that there is almost no difference between the velocity profiles of all three methods. So just wonted to check that with my velocity Im getting from the odometry (wheel encoders) as I have data from the odometry in my bag file. So any help?