I much prefer Mathematica’s syntax. The first time I had to read some R code I ran across a statement something like
runif(1, 3, 4). I thought it was some sort of conditional execution statement: run something if some condition holds. No, the code generates a random value uniformly from the interval (3, 4). The corresponding Mathematica syntax is
Random[ UniformDistribution[3,4] ].
Another example. The statement
pnorm(x, m, s) in R corresponds to
PDF[ NormalDistribution[m, s], x ] in Mathematica. Both evaluate the PDF of a normal random variable with mean m and standard deviation s at the point x.
It’s a matter of taste. Some people prefer terse notation, especially for things they use frequently. I’d rather type more and remember less.