Ball hardness is different. The surface of the ball used in tennis is covered with felt. Therefore, that ball is firm. While, the ball used in soft tennis is made out of rubber. Accordingly, that ball is soft. Soft tennis ball is lighter than tennis ball. Rule is different. If you get more than 2 points ahead and get more than 4 points, then you win one game is the same. In soft tennis, 4 points ahead is set as one set and 4 sets get will win. Whereas, in tennis, 6 games ahead is set as one set and 2 or 3 sets get will win. So, tennis harder than soft tennis. Stretching of net is difference. In soft tennis, bold the net horizontally. But, in tennis, lower the middle slightly. Tennis has a professional. However, soft tennis is amateur sports. That is way tennis is prizer than soft tennis. klingt das natürlich?

So grammatical corrections: In tennis and soft tennis the ball hardness is different. The surface of the ball used in tennis is covered with felt. Therefore, that ball is firm. While, the ball used in soft tennis is made out of rubber. Accordingly, that ball is soft. Soft tennis BALLS ARE lighter than REGULAR tennis BALLS. THE RULES ARE ALSO different. If you get more than 2 points ahead and get more than 4 points, then you win one game is the same. In soft tennis, 4 points ahead is set as one set and 4 sets WILL GET THE win. Whereas, in tennis, 6 POINTS ahead is set as one set and 2 or 3 sets WILL GET THE win. So, tennis IS harder than soft tennis. Stretching of THE net is ALSO DIFFERENT. In soft tennis, THE NET IS BOLDLY HORIZONTAL. But, in tennis, THE MIDDLE OF THE NET GETS LOWERED slightly. Tennis IS a professional SPORT. However, soft tennis is AN amateur SPORT. That is WHY tennis HAS MORE prizes than soft tennis.