Who is better at calligraphy, Tian Yingzhang or Sha Menghai?

Some Tibetan friends even think that Sha Lao's calligraphy achievement is not as good as that of Tian Yingzhang, a contemporary master of regular script, and Sha Menghai is the Great Compass of Mount Tai in modern calligraphy. However, Sha Lao rarely shows his regular script works in front of people, so many people think that Sha Menghai's regular script level is poor, if not bad, but it is definitely not good. This view has influenced many people's evaluation of Sha Lao, thinking that his level is just like that and he is not a great calligrapher.