Slower than the others, but not too slow. And i like this performance because of her voicings and rubato, i think she depicts the railroad better than the others. Moreover, the last part is deliberately getting slower as it depicts a train slowing down and stopping, which affects the performance's duration.
Its good tempo actually. There is no evidence that Liszt and Alkan played at speeds that would turn it into a circus act. On the contrary, it is a wrong performance tradition to turn Liszt and Alkan into a show pieces because they needs hard techniques. Here, technique should be a tool, not a show off and İdil Biret has shown this she did empshazing musicality even by decreasing speed. This is the only performance here that seriously resembles a train sound. Thats why that performance is based
