TaskRun vs Sync

TaskRun vs Sync

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Threading.Tasks;
using System.Web.Http;

namespace MvcApplication1.Controllers
{
    public class WaitController : ApiController
    {
        [HttpGet]
        public async Task<long> TaskRunWait()
        {
            return await Task.Run(() => WaitOperation());
        }

        [HttpGet]
        public long Wait()
        {
            return WaitOperation();
        }
        
        private static long WaitOperation()
        {
            int waitTime = WaitTimeGenerator.GetWaitTime();
            Stopwatch stopwatch = Stopwatch.StartNew();
            for (int i = 0; i < waitTime; i++)
            {

            }
            return stopwatch.ElapsedMilliseconds;
        }
    }

    public static class WaitTimeGenerator
    {
        private const int Seed = 100;

        private static readonly Random Random = new Random(Seed);

        public static int GetWaitTime()
        {
            return Random.Next(900000000, 1000000000);
        }
    }
}

https://www.dropbox.com/sh/qtxj5xmbslftlc2/B48RoYarOO - perf tests screenshots
https://www.dropbox.com/s/sty8ep5h4c9lxjc/MvcApplication1.rar - solution archive