I think the answer is , you have to use volume vs tick under certain conditions, and depending on what you are actually trying to measure. I do certain studies that rely on volume charts exclusively.
Keep in mind that tick charts have been around a lot longer than volume charts , so many traders are used to them and will not cut loose.
Keep in mind that tick charts have been around a lot longer than volume charts , so many traders are used to them and will not cut loose.