The statistics shown is great improvement, so props to them but normally data like this doesn't mean they're all good now. When Hitachi bought the IBM hard drive business, they also claimed that their technology has much improved and will offer the same quality service and products as the other competitors. However, that never was true, which is shown through my personal experience and data I provided. Once you lose confidence with a brand, it's actually normal to not consider buying them again regardless how positive the new data may be. Many research and surveys have been done about this so you can find a lot of this data online.
Let's say it hurt my business a lot by using their drives in my systems and it cost me a lot of trouble and money. So for someone like me, it would take a miracle to convince me to buy their brand again, let alone a small bit of positive data.