We will be arriving in Fullerton on the SW Chief and then continuing onto San Diego on the Pacific Surfliner in business class. I noticed that the baggage max. size is different. SWC=28x22x14 whereas Pacific Surfliner is 28x22x11. Why the difference and does it really matter? When I talked to someone at Amtrak they told me that all baggage sizes were the same for all trains and then I noticed this difference. So am wondering how firm that is?